package com.boat.io.util;

import com.boat.io.asmr111.FilterFactory;
import com.boat.io.LineFilter;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class FileUtil {

    public static void main(String[] args) {

        String filename = "E:\\1.txt";
        ArrayList<String> list = new ArrayList<String>(2);
        list.add("title");
        list.add("mp3");
        List<String> res = fileByFilter(filename, FilterFactory.getFilters(list));
        FileUtil.print(res);


    }

    public static void print(List<String> list){
        for (String s : list) {
            System.out.println(s);
        }
    }


    public static List<String> fileByFilter(String fileName, List<LineFilter> filterList){
        List<String> list = new ArrayList<String>();
        File file = new File(fileName);
        BufferedReader reader = null;
        try {
//            System.out.println("以行为单位读取文件内容，一次读一整行：");
            reader = new BufferedReader(new FileReader(file));
            String tempString = null;
            int line = 1;
            // 一次读入一行，直到读入null为文件结束
            while ((tempString = reader.readLine()) != null) {
                // 显示行号
                for (LineFilter lineFilter : filterList) {
                    String str = lineFilter.contains(tempString);
                    if(str!=null){
                        list.add(str);
                        break;
                    }
                }
                line++;
            }
            reader.close();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (reader != null) {
                try {
                    reader.close();
                } catch (IOException e1) {
                }
            }
        }
        return list;



    }

    public static List<String> readFileByLines(String fileName ) {

        List<String> list = new ArrayList<String>();
        File file = new File(fileName);
        BufferedReader reader = null;
        try {
//            System.out.println("以行为单位读取文件内容，一次读一整行：");
            reader = new BufferedReader(new FileReader(file));
            String tempString = null;
            int line = 1;
            // 一次读入一行，直到读入null为文件结束
            while ((tempString = reader.readLine()) != null) {
                // 显示行号
                list.add(tempString);
                line++;
            }
            reader.close();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (reader != null) {
                try {
                    reader.close();
                } catch (IOException e1) {
                }
            }
        }
        return list;
    }
}
